title: BRDF profile of Tyvek and its implementation in the Geant4 simulation toolkit.
abstract: Diffuse and specular characteristics of the Tyvek 1025-BL material are reported with respect to their implementation in the Geant4 Monte Carlo simulation toolkit. This toolkit incorporates the UNIFIED model. Coefficients defined by the UNIFIED model were calculated from the bidirectional reflectance distribution function (BRDF) profiles measured with a scatterometer for several angles of incidence. Results were amended with profile measurements made by a profilometer.
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Joint Laboratory of Optics, Faculty of Science, Palacky University, Olomouc, Czech Republic. libor.nozka@upol.cz
authors.forename: Libor
authors.initials: L
authors.lastname: Nozka
authors.forename: Miroslav
authors.initials: M
authors.lastname: Pech
authors.forename: Helena
authors.initials: H
authors.lastname: Hiklova
authors.forename: Dusan
authors.initials: D
authors.lastname: Mandat
authors.forename: Miroslav
authors.initials: M
authors.lastname: Hrabovsky
authors.forename: Petr
authors.initials: P
authors.lastname: Schovanek
authors.forename: Miroslav
authors.initials: M
authors.lastname: Palatka
mesh_terms: D003198:Computer Simulation; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D011108:Polymers / Q000737:chemistry*; D011381:Programming Languages; D012031:Refractometry; D012542:Scattering, Radiation; D012984:Software
chemical_list: D011108:Polymers; C104709:tyvek